Apparatus for sintering fine ores or pulverulent ores



Jan. 10, 1928. 1,656,115

A. HOLMBERG APPARATUS FOR SINTERING FINE OHES 0R PULVERULENT ORESOriginal Filed June 21. 1923 4 Sheets-Sheet l Jan. 10, 1928. 1,656,115

A. HOLMBERG APPARATUS FOR SINTERING FINE ORES 0R PULVERULENT ORESOriginal Filed June 21, 1923 4 Sheets-Sheet 2 Jan. 10, 1928. 1,656,115

A. HOLMBERG APPARATUS FOR SINTERING FINE ORES OR PULVERULENT DRESOriginal Filed June 21. 1923 4 Sheets-Sheet 5 1 K55 I06 107 I05 1% 4 PO/o5 /O6 107 /o5 /o9 //o (/2 //J Jan. 10, 1928. 1,656,115

A. HOLMBERG APPARATUS FOR SINTERING FINE ORES OR PULVERULENT ORESOriginal Filed June 21. 192 4 Sheets-Sheet 4 Patented Jan. 10. 192a.

UNITED STATE ANDERS HOLMIBERG, OF STOCKHOLM, SWE

:oniv, assrenon 'I'O Hanan ensrnr ronunr.

or srooxnomn, s'wnnnn'.

APPARATUS FOR SINTERINGl FINE OREfi OE PULVERULEN'JI DREd.

- Original application filed June2l, 1923, Serial No. 646,88'3", and inSweden July 3, 1922. Divided and thinapplication filed January Thisinvention relates to an improved plant for sintering fine ores orpulverulent ores.

The object of the invention is to provide a 5 sintering system or plantof the said kind which enables a practically continuous sin tering ofsuch ores at low cost and in such way as to secure the most hyg enlcconditions possible as regards the operators.

id The invention consists, chiefly, in a sintering system, comprising aplurality of independent portable sintering vessels, exhaustingapparatus, a plurality ofwork positions, suction pipes extending fromsaid exhaust- 15 ing apparatus to all of the work positlons .and eachadapted to be kept connected with one sintering vessel during thesintering of the material contained therein, a track extending alon thework positions to a dis- 20 charge place o! the sintered material,transporting means on said track adapted to transport the vessels .withthe slntered material from either of the work positions to the dischargeplace, and'a charging apparatus at at said track at a distancefrom thework positions.

Due to the fact that the charge filling and emptying operations takeplace'at distant points from the sintering positions the latter as willbe free from injurious dust and smoke.

With the method according to this invention as compared with hithertoknown methods a larger output, lower working expenses and a bettersintering product will result as from the fact that the charg: fillingand sintering operations ma be tter supervised when taking place atitierent places without exposing the o rators to injurious smoke andheat and t at the sintering vessels rest an stationary during thesintering operation proper.

In the accompanying drawin s several ex amples of plants according to tis invention are shown. Fig. 1 is a diagrammatic plan at view of a plantaccording to one embodiment of the invention. Fig. 2 is a diagrammaticelevation of said lant. Fi 3 is an elevation of the charge Hing deviceof said plant. Fig. 4 is an elevation of a tiltable sintering no vesseland Fig. 5 is a vertical section of said vessel taken at right angles tothe elevation shown in Fig. d.

Fig. 6 is a diagrammatic elevatiom-with partin section, of a second formof plant 14, 1921?. Serial No. ieiaaa.

according to the invention. Fig. 7 is a cross sectionand Fig. 8 is a'plan view of said second plant.

Fig. 9 is a diagrammatic elevation of a third plant. Fig. 10 is a crosssection and F g. 11 is a plan-view of said third plant.

he plant shown in Figs. 1-5 comprises a charge filling house 1, anexhausting house 2, a work platform 3 at one side thereof, an emptyingplace 4t and a cable way 5 extending from the emptying place, throughthe charge filling, and from thence in two par allel branches over theplatform 3 and baclr to the emptying place. At the emptying place aconnection (not shown) is provided between the ends of the cable way sothat the latter forms, in fact, a closed circuit. The cable way isadapted to carry sintering vessels from the emptying place 4 to thecharge filling house and, after the charge filling operation has beencompleted, to a worlr position on the platform 3 where the sinteringoperation takes place, and after the com pletion of said sinteringoperation baclr again to the emptying place, as will be here inaftermore in ly set forth.

The sintering vessels (Figs. d, 5) comprise tiltable open-toppedreceptacles 6 having supporting arms by means of which the vessels maybe suspended on and moved along the cable way 5. Each sintering vesselis provided with a grate 8 (Fig. 5) to support the charge. The saidgrate rests on an annular bracket 9 which may be adjusted vertically byany suitable means (not shown). Mounted below the grate d is a suctionpipe 10 having a downwardly directed month; In the bottom of theslntering vessels shutters .12 may be provided to facilitate cleaning oithe vessel.

The charge filling house 1, Fig. l, en closes any appropriate type ofmingling apparatus to c set an intimate mixing oi the fine ore orpulverulcnt ore with a audicient quantity. ofpowdered fuel. in Figs. 2;and 3 the outlines of the mingler are indic'ated at 13. The mingler isprovided at its lower end with two storage pockets 14, Fig". 3, situatedat opposite sides of the cable-way 5 so as to permit the vessels toremain suspended on the cable during the charge filling operation. Thecharge lin o oration is carried out by swinging out tie ottoms l6, 16closing the lower ends at the pockets till [ill

lid

Mid

around their. pivots 15, 15, thereby permitting the material containedin the pockets to drop into the sintering vessel and fill same. Thebottoms are then swung inwards so as to again close the ends of thepockets, at the same time levelling the surface of the charge in thevessel filled. The mingler 13 is filled by means of any suitableconveying device. 13' Fig. 2.

The sintering vessel, having been filled, is removed from the chargefilling house and carried up to a work position on the plat form 3. Inthe drawing, Fig.1, two parallel rows of work positions 17 18, 1.9, 20and. 21, 22, 23, 24, respectively, are shown. The exhausting houseencloses an exhauster' 26 driven by an electric-motor 25. The suctionpipe 27 of the exhauster is connected with two suction chambers 28, 29each of which is situated below one of the rows of work. positions;Extendin from said suction chamy the cable way and carried up to thevemptyin place. The .vessel having been emptied is moved to the chargefilling house, where it is again filled and is then placed onposition,21. Thenext vessel in'which the sintering operation iscompleted is that on 18 and when the sintering inthis vessel iscompleted the vessel is movedin the same 11.1% as that described abovein connection wi the vessel from 17. After the vessel from 18 has beenemptied and charged it will be placedon the position 22. This procedarewill be repeated till all the ositions 21, 22, 23, 24 have beenoccupied. he positions 17, 18, 19, 20 are now idle. When the char of thevesselon 21 has been com- .plete y sintered, said vessel is emptied at4,

again filled at 1 and placed on the position 17 and so on.

theway described a ractically con tmuous operation may be 0 tained.Moreover, the sintering places will be completely free from the dustinherent to the emptying- .of the vessels.

, In the plant shown in Figs. .6-8 101 is the charge filling place, 102is the exhausting house, 103 is the work latform and 104 is the emptyingplace. A1 of the sintering or work positions are-arranged in a sin lerow divided in two groups 105,109 and 11o 114, respectively. Each grouhas a common suction chamber 115 an 116, respectively, incommunicationwith the suction side of the exhausters 117, 118 within theexhausting house 102. Provided along the row of sintering positions arerails 119 to carry a movable igniter 120, which may be moved over therow of positions 105-114 and the sintering vessels thereon.

Provided along with the row work positions is a rail-way 121 furtherextending to the emptying place 104. The work positions and thecorresponding ortion of the railway 121 are enclosed within a house 122also enclosin a travelling crane 125 serving to lift t e sinteringvessels. Mounted above the railway 121 outside the house 122 ,is thecharge filling device'101. The charge filling device is not shown indetail, as it may be of the type'described above. The feeding of thedevice 101 may be effected by abelt conveyer 123 or the like.

The operation is as follows:

As soon as the charge in any-of the vessels is sufiiciently sintered,this vessel is removed from its position by means of the travelling"crane 125 and placed on a wa on 124 on the railway 121 by means of whichthe vessel is carried up to the emptying place 104, where it is emptied.The w the emptied vessel is moved bac on the railway 121 and is stoppedbelow the charge filling device 101. e vessel is now filled with a freshcharge and the wagon with the filled vessel is thereupon moved to aposition in register with -therespective work position. The vessel .isthen removed from the wagon and placed on-its position by means of thecrane 125. The igniter is moved up in register with the said vessel andcaused to ignite the, charge therein. The same procedure is repeated asregards the remaining vessels accordin as the sintering, of theircontents is com eted. The number ofwork positions is suc as to permit asubstantially continuous operation, that is, the sintering of the chargeof a subsequent vessel will be ended when the receding vessel has beencharged and the cliarge therein ignited.

Figs. 9-11 show a small lant based on the same principle that un erliesthe plant shown 1n Figs.

A number or work or sintering places 205-210 are provided above a commonsuction chamber 215 communicating with the suction sideof the exhauster217 within the exhausting house 202. Extending alon the work positionsat a higher level is a mi way 219 on which the i iter 220 may move overthe vessels situate on said positions, and provided in the extension ofthe row of work positions is. a railway 221 supporting a wag on 224large enou h to enable two sintering vessels to stand t 'ereon at thesame time. The work places and a portion of the railway 221 are enclosedwithin the house 222. This house also enclosed an elevated rail 223 witha travelling crane 225. The rail 223 extendsto the emptying place 204.Mounted on 124 with above the railway 221 immediately outside the house222 is the charge filling device 201.. The design 0t said device maysubstantially correspond to that described in connection with the firstembodiment. The material is supplied to the charge filling device from amingler 200. Provided .at the emptying place is a chute 230 having asieve (not shown) to cause dusty and like particles to drop through thehopper 281 down into a wagon 232 on the railway 233 while allowing thesintered material to slide down into a wagon 234 on another railway 235.

The operation is as follows:

Let it be assumed that a filled vessel is standing on the wagon 224.When the charge in any oil the vessels on the work positions 205 210 hasbeen completely sintered, this vessel is lifted from its work positionby means of the crane 225 and carried up to the emptying place 204;where it is emptied, The vessel having been emptied, is carried up bythe crane 225 to the wagon 22d and placed thereon, whereupon .the

charged vessel already standing on the wagon is lifted and placed on theposition of the vessel just em tied. The vessel on the wagon an iscarried up below the charge filling device 201 and again filled withmaterial to be sintered. The wagon with the charged vessel is then movedloack again to the position shown in Fig. 11. As soon as sintering iscompleted in a further vessel, this vessel is subjected to the operationdescribed.

Whatll claim is l. A sintering system, comprising a plurality ofindependent portalile sintering vessels, exhausting apparatus, aplurality of worlr positions, suction pipes extending from saidexhausting apparatus to either of the worlr positions and eachadapted'to he lrept connected with one sintering vessel during thesintering of the material contained there in, a track extending alongthe worlr positions to a distant discharge place for the sinteredmaterial, transporting means on said track adapted to transport thevessels with the sintered material from either of the work positions tothe discharge place, and a charg ing apparatus at said track at adistance from the work positions.

2. A sintering system, comprising a plurality of independent portablesintering vessels, exhausting apparatus, a plurality of work positions,suction pipes extending from said exhausting apparatus to any of thework positions and each adapted to be kept connected with one sinteringvessel during the sintering of the material contained therein, anigniting device movable along the worlr positions to either of saidworlr positions, a track extending along the work positions to a distantdischarge place for the sintered material, transporting means on saidtrack adapted to transport the vessels with the sintered material fromeach of the worlr positions to the discharge place, and a chargingapparatus at said truclr at a distance from the work positions,

In testimony whereof I have signed my name.

ANDERS HOLMBERG.

Eli

